.nav-collapse ul {
    margin: 0;
    padding: 0;
    width: 100%;
    display: block;
    list-style: none;
}

.nav-collapse li {
    width: 100%;
    display: block;
}

.js .nav-collapse {
    clip: rect(0 0 0 0);
    max-height: 0;
    position: absolute;
    display: block;
    overflow: hidden;
    zoom: 1;
}

.nav-collapse.opened {
    max-height: 9999px;
}

.nav-toggle {
    -webkit-tap-highlight-color: rgba(0,0,0,0);
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    -o-user-select: none;
    user-select: none;
}

@media screen and (min-width: 40em) {
    .js .nav-collapse {
        position: relative;
    }
    .js .nav-collapse.closed {
        max-height: none;
    }
    .nav-toggle {
        display: none;
    }
}